The King of the Ron Toomer mega-loopers!
Yes, it certainly stands today as very outdated tech (coat hanger wonkiness and all!), but I can totally appreciate Viper for its rightful place as the pinnacle achievement of a coaster type that completely revolutionized the industry back in the 70s/80s. As a coaster-child of the '80s, those old Arrow behemoths lived so very large in my still developing enthusiast psyche at the time.
Nostalgia? Of course! But I think through most objective lenses, Viper still holds a not insignificant place in roller coaster history.
And compared to most of its fore-runners, especially its 7-looper direct-predecessor cousins (SFGAm's Shockwave and SFGAdv's GASM), Ron and the boys at Arrow mostly got it right on their 3rd try, given the tech and systems they were working with at the time. The most notable improvement, IMO, being the straight-shot into the MCBR, eliminating those horrendously mis-engineered tight upward turns into the MCBRs seen on rides like Shockwave, GASM, and KI's Vortex. Those turns could mess you up something fierce if you didn't anticipate and properly brace for them. On Viper they wisely decided to just bring the train straight in for the big slow-down without any accompanying opportunities for whiplash. smart.
If we were playing magic wand games and I had a chance to preserve only 1 Arrow multi-looper for posterity, I think Viper would have to be my #1 choice. If i got a 1A and a 1B, I'd probably throw BGW's Nessie into the ring too. Those two seem to stand above the others of their genre, IMO. That said, I've never had a chance to ride Marineland's Dragon Mountain, so maybe that one is in the mix as well?